CN110415938A - A kind of magnet controlled reactor core structure and design method - Google Patents

A kind of magnet controlled reactor core structure and design method Download PDF

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Publication number
CN110415938A
CN110415938A CN201910814790.XA CN201910814790A CN110415938A CN 110415938 A CN110415938 A CN 110415938A CN 201910814790 A CN201910814790 A CN 201910814790A CN 110415938 A CN110415938 A CN 110415938A
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iron
core
column
exchange
magnet
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CN201910814790.XA
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CN110415938B (en
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李晓明
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Priority to CN201910814790.XA priority Critical patent/CN110415938B/en
Priority to PCT/CN2019/112019 priority patent/WO2020088282A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/08—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by varying the permeability of the core, e.g. by varying magnetic bias
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means

Abstract

Present disclose provides a kind of magnet controlled reactor core structure and design methods, exchange iron core column including being located at two sides, and multiple iron-core coil columns between two exchange iron core columns are set, and by exchanging return yoke connection between each exchange iron core column and adjacent iron-core coil column, form exchange closed loop flux loop, it is connected between adjacent iron-core coil column by direct current return yoke, forms closed-loop dc flux loop；Several magnet valves are provided on each iron-core coil column；Each exchange iron core column is equal to S with the sectional area for exchanging return yoke；The sectional area of direct current return yoke is greater than or equal to S, is less than 1.2S, and remaining core section product is equal to K at magnet valve3The sectional area of S, non-magnetic valve position are equal to (K3S+K4), and 1 < (K S3+K4)≤2, K3≤ 1, S are the sectional area of equivalent capability transformer fe stem.Magnet controlled reactor iron core can be made to have ideal magnetization curve, volume is smaller with weight, and electric current higher harmonic content is smaller.

Description

A kind of magnet controlled reactor core structure and design method
Technical field
The disclosure belongs to magnet controlled reactor design field, and in particular to a kind of magnet controlled reactor core structure and design Method.
Background technique
Only there is provided background technical informations relevant to the disclosure for the statement of this part, it is not necessary to so constitute first skill Art.
Reactor is very widely used in the power system.In some application fields, the reactance value of reactor is fixed Constant；And in other application fields, the reactance value of reactor should constantly be adjusted with the variation of power system operation mode Section.The controlled reactor that reactance value can continuously adjust is important subject.
Magnet controlled reactor (also referred to as: saturable reactor) utilizes the nonlinear characteristic of closed-iron core magnetization curve, by continuous The size of DC current in DC coil on closed-iron core is adjusted to adjust the degree of saturation of closed-iron core, realization, which continuously adjusts, closes The size of AC coil (reactance coil) reactance value on ring iron core.
Due to magnet controlled reactor work meeting in the nonlinear section of closed-iron core magnetization curve, the electric current of magnet controlled reactor Generate a large amount of higher harmonic currents.Higher harmonic current is harmful to electric system, it is therefore desirable to study reduction magnet controlled reactor The measure of middle higher harmonic current.Now studies have found that designing a magnet valve on magnet controlled reactor iron core, magnetic can be effectively reduced Control the higher harmonic content in reactor current.It works well, is widely applied.
However, understand according to inventor, at present the set-up mode of the magnet valve of magnet controlled reactor and principle often only by rule of thumb, no Larger with the magnet controlled reactor performance difference for producing family's production, performance is unsatisfactory.
Summary of the invention
The disclosure to solve the above-mentioned problems, proposes a kind of magnet controlled reactor core structure and design method, the disclosure The magnet controlled reactor core structure of offer has ideal magnetization curve, moreover it is possible to keep core volume smaller with weight, magnet controlled reactor electricity It is smaller to flow higher harmonic content.
According to some embodiments, the disclosure is adopted the following technical scheme that
A kind of magnet controlled reactor core structure, including at least two exchange iron core columns, and setting exchange iron core column two Between multiple iron-core coil columns, and connected between each exchange iron core column and adjacent iron-core coil column by exchange return yoke, shape At exchange closed loop flux loop, is connected between two adjacent iron-core coil columns by direct current return yoke, form closed-loop dc magnetic flux Loop；Several magnet valves are provided on each iron-core coil column；
Wherein, it respectively exchanges iron core column, exchange the sectional area of return yoke equal to S；The sectional area of direct current return yoke is greater than or equal to S, Less than 1.2S；Remaining core section product is equal to K at magnet valve3The sectional area of S, non-magnetic valve position are equal to (K3S+K4), and 1 < (K S3 +K4)≤2, K3≤ 1, S are the sectional area of equivalent capability transformer fe stem.
It is multiple to refer at least two in the disclosure.
As selectable embodiment, the magnet valve on each iron-core coil column has multiple.
As selectable embodiment, shape, size and/or the number of each magnet valve can be unanimously or inconsistent.
As selectable embodiment, the combination of the rectangular in cross-section and isosceles triangle of the magnet valve, and rectangle Broadside one end connects the bottom edge of isosceles triangle, and the length of rectangle is L, and the height of isosceles triangle is H, 3 < (L/H) < 10.
As selectable embodiment, the magnet valve on each iron-core coil column is arranged far from closed-loop dc flux loop On path.
As selectable embodiment, the magnet valve on each iron-core coil column is positioned close on the path of exchange flux.
As selectable embodiment, the sectional area for respectively exchanging iron core column, exchange return yoke and direct current return yoke can be identical, It can also be different.
Multiple coils are arranged side by side between two exchange iron core columns in a kind of design method of magnet controlled reactor core structure The end of iron core column, every two adjacent iron core column is linked together by return yoke, closed loop is formed, in each iron-core coil Design has several magnet valves on column；
Wherein, it respectively exchanges iron core column and is equal to S with the sectional area for exchanging return yoke；The sectional area of direct current return yoke is greater than or equal to S, Less than 1.2S；Remaining core section product is equal to K at magnet valve3The sectional area of S, non-magnetic valve position are equal to (K3S+K4), and 1 < (K S3 +K4)≤2, K3≤ 1, S are the sectional area of equivalent capability transformer fe stem.
A kind of electrical equipment, including above-mentioned magnet controlled reactor core structure or the structure obtained based on the design method.
Compared with prior art, the disclosure has the beneficial effect that
The magnet controlled reactor core structure that the disclosure provides passes through the sectional area for configuring each exchange iron core column with exchanging return yoke Equal to S；The sectional area of direct current return yoke is more than or equal to S, is less than 1.2S, and remaining core section product is equal to K at magnet valve3S, non-magnet valve The sectional area of position is equal to (K3S+K4), and 1 < (K S3+K4)≤2, K3≤ 1, S are the sectional area of equivalent capability transformer fe stem, Magnet controlled reactor iron core can be made to have ideal magnetization curve, moreover it is possible to keep core volume smaller with weight, magnet controlled reactor electric current is high Subharmonic content is smaller.
The disclosure is by the magnet valve on each iron-core coil column, and magnet valve is arranged far from the stream ring of closed-loop dc flux loop On path/and in the stream endless path of exchange flux, be conducive to the core sataration of the non-magnetic valve position of iron-core coil column, realize straight The sensitive control of galvanic electricity stream；Be conducive to exchange flux and flow through magnet valve, reduces the higher harmonic components of magnet controlled reactor electric current.
Detailed description of the invention
The Figure of description for constituting a part of this disclosure is used to provide further understanding of the disclosure, and the disclosure is shown Meaning property embodiment and its explanation do not constitute the improper restriction to the disclosure for explaining the disclosure.
Fig. 1 is the magnet controlled reactor core structure of embodiment one；
Fig. 2 is the magnet controlled reactor core structure of embodiment two.
Wherein, 5, exchange iron core column I, 6, iron-core coil column I, 7, iron-core coil column II, 8, exchange iron core column II, 9, exchange Return yoke I, 10, direct current return yoke, 11, exchange return yoke II.
Specific embodiment:
The disclosure is described further with embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the disclosure.Unless another It indicates, all technical and scientific terms used herein has usual with disclosure person of an ordinary skill in the technical field The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the disclosure.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In the disclosure, term for example "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", " side ", The orientation or positional relationship of the instructions such as "bottom" is to be based on the orientation or positional relationship shown in the drawings, only to facilitate describing this public affairs The relative for opening each component or component structure relationship and determination, not refers in particular to either component or element in the disclosure, cannot understand For the limitation to the disclosure.
In the disclosure, term such as " affixed ", " connected ", " connection " be shall be understood in a broad sense, and indicate may be a fixed connection, It is also possible to be integrally connected or is detachably connected；It can be directly connected, it can also be indirectly connected through an intermediary.For The related scientific research of this field or technical staff can determine the concrete meaning of above-mentioned term in the disclosure as the case may be, It should not be understood as the limitation to the disclosure.
Embodiment one:
As shown in Figure 1, magnet controlled reactor iron core, the exchange flux that iron-core coil column I6 coil generates is in coil iron core column The closed loop iron core magnetic circuit circulation that I6, exchange iron core column I5, exchange return yoke I9 are constituted.The friendship that iron-core coil column II7 coil generates Flow the closed loop iron core magnetic circuit circulation that magnetic flux is constituted in coil iron core column II7, exchange iron core column II8, exchange return yoke II11.Coil iron The direct current flux that stem I6 and iron-core coil column II7 coil generate is in coil iron core column I6, iron-core coil column II7, direct current iron The closed loop iron core magnetic circuit circulation that stem 10 is constituted.There is magnet valve on iron-core coil column I6, iron-core coil column II7.
Specific reactor winding structure sees CN106026813A.Or other existing structures are selected, it is no longer superfluous herein It states.
Exchange iron core column I5, exchange iron core column II8, exchange the return yoke I9, direct current of the magnet controlled reactor iron core of the present embodiment Return yoke 10, the sectional area for exchanging return yoke II11 are identical as the core section product of conventional magnetron core of reactor corresponding position, i.e., etc. In the sectional area S of equivalent capability transformer fe stem；The section of non-magnetic valve position on iron-core coil column I6, iron-core coil column II7 Product is equal to (K3S+K4), and (K S3S+K4S) it is greater than S, is equal to or less than 2S；Wherein: K3Less than or equal to 1.S be equivalent capability, It is not provided with the sectional area of the transformer fe stem of any magnet valve.Remaining core section product is equal to K at magnet valve3S, K3Be less than or Equal to 1.
It can analyze, if exchange iron core column I5, exchange iron core column II8, exchange return yoke I9, the section for exchanging return yoke II11 Product be equal to equivalent capability transformer fe stem sectional area S, magnet controlled reactor under the conditions of voltage rating, exchange iron core column I5, Saturated phenomenon would not occur in exchange iron core column II8, exchange return yoke I9, exchange return yoke II11.Therefore exchange iron core column I5, exchange Iron core column II8, exchange return yoke I9, exchange return yoke II11 sectional area may not necessarily be greater than S.If exchanging iron core column I5, exchange Iron core column II8, exchange return yoke I9, the sectional area for exchanging return yoke II11 cannot improve magnet controlled reactor performance indicator, but greater than S Increase magnet controlled reactor weight and volume.
10 sectional area of direct current return yoke is greater than S, under the direct current magnetic potential effect of coil iron core column II6 and iron-core coil column II7, Iron-core coil column II6 and the saturation of iron-core coil column II7 are reinforced.But magnet controlled reactor core volume adds with weight Greatly.It considers further that easily manufactured factor, balances pros and cons, 10 sectional area of direct current return yoke is equal to S or is slightly larger than S, proper.
Consider technique and margin requirement and practical experience, exchange iron core column I5, the exchange iron core of magnet controlled reactor iron core Column II8, exchange return yoke I9, exchange return yoke II11 sectional area take the sectional area S equal to equivalent capability transformer fe stem, direct current The sectional area of return yoke 10 takes the sectional area S equal to or more than equivalent capability transformer fe stem, is less than 1.2S.In this way, magnetic control is electric Anti- device core structure can make magnet controlled reactor iron core have ideal magnetization curve, and magnet controlled reactor higher harmonic content is minimum, Core volume can also be made smaller with weight.Exchange iron core column I5, exchange iron core column II8, the exchange return yoke of magnet controlled reactor iron core I9, direct current return yoke 10, exchange return yoke II11 sectional area need not be with the sectional area of iron-core coil column II6 and iron-core coil column II7 It is identical.
Direct current flux circulation path in magnet controlled reactor iron core is shorter, is more conducive to iron-core coil column I6, iron-core coil The core sataration of non-magnetic valve position on column II7 realizes the sensitive control of DC current.So iron-core coil column I6, iron-core coil Magnet valve on column II7 should be far from the shorter circulation path of direct current flux.
Magnet valve designs on the shorter path of exchange flux circulation path, is more conducive to exchange flux and flows through magnet valve, exchanges The ratio that magnetic flux flows through magnet valve is bigger, can reduce the higher harmonic components of magnet controlled reactor electric current.So iron-core coil column Magnet valve on I6, iron-core coil column II7 should be designed as far as possible on the shorter circulation path of exchange flux.
As shown in Figure 1, the exchange flux that iron-core coil column I6 coil generates is in coil iron core column I6, exchange iron core column The closed loop iron core magnetic circuit circulation that I5, exchange return yoke I9 are constituted.Exchange flux is in the left half of circulation of coil iron core column I6, path It is shorter.So left one side of something of magnet valve online design circle iron core column I6 is preferably.The direct current flux that iron-core coil column I6 coil generates In the closed loop iron core magnetic circuit circulation that coil iron core column I6, iron-core coil column II7, direct current return yoke 10 are constituted.Direct current flux is in coil When the right half of circulation of iron core column I6, path is shorter.So magnet valve be also online design circle iron core column I6 it is left it is half of preferably.
Similarly, the magnet valve online design circle iron core column II7 on iron-core coil column II7 it is right it is half of preferably.As shown in Figure 1.
Certainly, in the present embodiment, the magnet valve on iron-core coil column I6, iron-core coil column II7 is two, is rectangle, magnetic Valve is rectangular configuration, and when magnet controlled reactor minimum current and maximum current may be implemented, the ratio of higher hamonic wave and fundamental wave is smaller. When other current status, the large percentage of harmonic wave and fundamental wave.
In other embodiments, the quantity of the magnet valve on each iron-core coil column can be changed, on each iron-core coil column Magnet valve quantity can be consistent, can also be inconsistent.And the shape of magnet valve can also be changed, such as be changed to triangle, arc.
Such as another preferred structure is provided as shown in Fig. 2, i.e. embodiment two:
Magnet valve on iron-core coil column I, iron-core coil column II is the combination of rectangle and isosceles triangle.Iron-core coil column I, The rectangle of magnet valve on iron-core coil column II is L deeply, and the height of isosceles triangle is H, and (L/H) is greater than 3, less than 10.The embodiment Magnet valve be rectangle and isosceles triangle combination.Non- magnet valve iron core and magnet valve can reduce other by isosceles triangle transition When current status, the ratio of harmonic wave and fundamental wave.
A kind of magnet controlled reactor of above-described embodiment can be manufactured and designed with the prior art, may be implemented completely, there is wide answer Use prospect.
The foregoing is merely preferred embodiment of the present disclosure, are not limited to the disclosure, for the skill of this field For art personnel, the disclosure can have various modifications and variations.It is all within the spirit and principle of the disclosure, it is made any to repair Change, equivalent replacement, improvement etc., should be included within the protection scope of the disclosure.
Although above-mentioned be described in conjunction with specific embodiment of the attached drawing to the disclosure, model not is protected to the disclosure The limitation enclosed, those skilled in the art should understand that, on the basis of the technical solution of the disclosure, those skilled in the art are not Need to make the creative labor the various modifications or changes that can be made still within the protection scope of the disclosure.

Claims (10)

1. a kind of magnet controlled reactor core structure, it is characterized in that: including at least two exchange iron core columns, and setting in two exchanges Multiple iron-core coil columns between iron core column, and by exchanging return yoke company between each exchange iron core column and adjacent iron-core coil column It connects, forms exchange closed loop flux loop, connected between adjacent iron-core coil column by direct current return yoke, form closed-loop dc magnetic flux Loop；Several magnet valves are provided on each iron-core coil column；
Wherein, it respectively exchanges iron core column, exchange the sectional area of return yoke equal to S；The sectional area of direct current return yoke is greater than or equal to S, is less than 1.2S；Remaining core section product is equal to K at magnet valve3The sectional area of S, non-magnetic valve position are equal to (K3S+K4), and 1 < (K S3+K4) ≤ 2, K3≤ 1, S are the sectional area of equivalent capability transformer fe stem.
2. a kind of magnet controlled reactor core structure as described in claim 1, it is characterized in that: the magnet valve on each iron-core coil column has It is multiple.
3. a kind of magnet controlled reactor core structure as described in claim 1, it is characterized in that: the shape of each magnet valve, size and/or Number is consistent；
Or, the shape of each magnet valve, size and/or number are inconsistent.
4. a kind of magnet controlled reactor core structure as described in claim 1, it is characterized in that: the rectangular in cross-section of the magnet valve with The combination of isosceles triangle, and the bottom edge of broadside one end connection isosceles triangle of rectangle, the length of rectangle is L, isosceles triangle Height be H, 3 < (L/H) < 10.
5. a kind of magnet controlled reactor core structure as described in claim 1, it is characterized in that: the magnet valve on each iron-core coil column is set It sets on the path far from closed-loop dc flux loop.
6. a kind of magnet controlled reactor core structure as described in claim 1, it is characterized in that: the magnet valve on each iron-core coil column is set It sets on the path close to exchange flux.
7. a kind of magnet controlled reactor core structure as described in claim 1, it is characterized in that: respectively exchanging iron core column, exchange return yoke And/or the sectional area of direct current return yoke is identical.
8. a kind of magnet controlled reactor core structure as described in claim 1, it is characterized in that: respectively exchanging iron core column, exchange return yoke And/or the sectional area of direct current return yoke is different.
9. a kind of design method of magnet controlled reactor core structure, it is characterized in that: being arranged side by side between two exchange iron core columns Multiple iron-core coil columns, the end of every two adjacent iron core column are linked together by return yoke, closed loop are formed, each Design has several magnet valves on iron-core coil column；
Wherein, it respectively exchanges iron core column and is equal to S with the sectional area for exchanging return yoke；The sectional area of direct current return yoke is greater than or equal to S, is less than 1.2S；Remaining core section product is equal to K at magnet valve3The sectional area of S, non-magnetic valve position are equal to (K3S+K4), and 1 < (K S3+K4) ≤ 2, K3≤ 1, S are the sectional area of equivalent capability transformer fe stem.
10. a kind of electrical equipment, it is characterized in that: including magnet controlled reactor core structure of any of claims 1-8 Or the structure obtained based on design method described in claim 9.
CN201910814790.XA 2018-10-29 2019-08-30 Iron core structure of magnetically controlled reactor and design method Expired - Fee Related CN110415938B (en)

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PCT/CN2019/112019 WO2020088282A1 (en) 2018-10-29 2019-10-18 Magnetically controlled reactor, and method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112487693A (en) * 2020-11-23 2021-03-12 国网浙江省电力有限公司杭州供电公司 Curve magnetic valve type controllable reactor harmonic wave optimization method, system and application

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202003797U (en) * 2011-02-24 2011-10-05 中国科学院电工研究所 Magnetic saturation type single phase controllable reactor
CN109326428A (en) * 2018-10-29 2019-02-12 李晓明 A kind of magnet controlled reactor and method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202003797U (en) * 2011-02-24 2011-10-05 中国科学院电工研究所 Magnetic saturation type single phase controllable reactor
CN109326428A (en) * 2018-10-29 2019-02-12 李晓明 A kind of magnet controlled reactor and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112487693A (en) * 2020-11-23 2021-03-12 国网浙江省电力有限公司杭州供电公司 Curve magnetic valve type controllable reactor harmonic wave optimization method, system and application
CN112487693B (en) * 2020-11-23 2021-10-26 国网浙江省电力有限公司杭州供电公司 Curve magnetic valve type controllable reactor harmonic wave optimization method, system and application

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